Improvement in stamp batteries



amat sata parte aan.

GEORGE D. oEOcKEn; OE VIRGINIA crrY, NEVADA.

Letters Patent No. 108,570, datediOetober 25, 1870.

IMPROVEMENT IN STAMP BATTERIES.

eAw- The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may once/rn:

Be it known that I, GEORGE I). UnocKER, of Virginia City, county of Storey, 4State of Nevada, have invented an Improved Stamp-Battery; and I do hereby declare the following `description and accompanying drawing are suicient vt enable any person skilled in the art Or science toV which it most nearly appertains to make and use my said invention Or improvement without further invention or experiment.

My invention relates tov certain improvements in the construction and operation of stamps, such as are used for pulverizing quartz or metal-bearing rock in Order to reduce it to a proper degree 0f fiueness to permit Of the extraction of the metal by amalgamation or otherwise; and

It consists in constructing the stamps so that they `can be' operated upon the principle of the trip-hammer, thereby rendering the stampers more effective,

with aless expenditure of power than the ordinary stamps, which are lifted `vertically by cams and allowed to' drop upon 'the Ore.

In Order to explain my invention so that others will understandA its construction and Operation, reference is had to the accompanying drawing forming a part of this specification, in which- A represents the mcrtars of my battery, which is constructed in any manner suitable to accommodate the style and movement of the stamps.

B is a bOx or frame-work, which is located a short distance in the rear Of the ,mortar and firmly secured in place. f

Bearing in the sides Of this box, and near the front end, is a fixed shaft, (t, which serves as a fuic-rum for the movement of the stamps.

C C are long rods or arms of suitable strength, each being provided with a transverse hub, F, through which the fixed shaft -a passes.

' These hubs are secured upon the rods near the rear end, leaving the short arm or rear end to project toward the rear of the box B. Ihe long arms of the rods C project directly forward, and are curved, as shown, so their front ends shall pass down through. openings in the topof the mortar.

To this end of the rods the stamps D are secured, so that the rise and fall Of the arm will Ycause the stamps to strike upon the dies or rock in" the mortar.

Near the rear end Of the bar B, and having its journals bearing in its Opposite sides, is a cam-shaft, E.

Secured to or formed upon this cylinder are projections .or cams, b, arranged in such a position as to strike the extremity of the shortarm of the lever or rod C, and by depressing it cause the arms to turn about their fulcrums and thus lift the stamps at the opposite end.

Afterv the projections have passed around suffi" arms of the levers O.

Secured upon these springs, in the proper position for giving the greatest reactionary force vare blocks, i, against which the short arms strike before being fully depressed bythe projections, so that when they are released the force of ,the springs will be added to the weight of the stamps in giving the blow.

G is a fly-wheel, which is secured4 upon the spindle of the cam-shaft E.

Tile cylinder can be driven by any suitable power.

By this manner of constructing and Operating stamps for crushing rock, I am able to secure greater crushing capacity with a less expenditure of power than is accomplished by any other method with which I am acquainted.

vThe number Of cams On the shaft E can be increased sO as cause' the stamp to strike with great rapidity and force.

Any number of stamps can be operated inside the mortar from the sameeylinder.

Having thus described my invention,

What I claim, and desire to secure by Letters Patent,isi The stamps I), in combination with the curved rods Or arms C, provided with hubs F, fulcrum a, springs e, blocks i, andA cams b, upon shaft E, when constructed and arranged for operation substantially as shown and described.

In witness that the above-described invention is claimed by me, I have hereunto set my hand and seal.

GEORGE D. GROGKER. [n s.]

Witnesses :v

GEO. H. STRONG, W. RATLAFF BOONE. 

